[IR] Move optional data in llvm::Function into a hungoff uselist

Make personality functions, prefix data, and prologue data hungoff
operands of Function.

This is based on the email thread "[RFC] Clean up the way we store
optional Function data" on llvm-dev.

Thanks to sanjoyd, majnemer, rnk, loladiro, and dexonsmith for feedback!

Differential Revision: http://reviews.llvm.org/D13829

llvm-svn: 256090

1 files changed, 5 insertions, 13 deletions

diff --git a/llvm/lib/IR/AsmWriter.cpp b/llvm/lib/IR/AsmWriter.cpp
index 51a0faee81c..124fc56e78f 100644
--- a/llvm/lib/IR/AsmWriter.cpp
+++ b/llvm/lib/IR/AsmWriter.cpp
@@ -103,17 +103,9 @@ static OrderMap orderModule(const Module *M) {
     orderValue(&A, OM);
   }
   for (const Function &F : *M) {
-    if (F.hasPrefixData())
-      if (!isa<GlobalValue>(F.getPrefixData()))
-        orderValue(F.getPrefixData(), OM);
-
-    if (F.hasPrologueData())
-      if (!isa<GlobalValue>(F.getPrologueData()))
-        orderValue(F.getPrologueData(), OM);
-
-    if (F.hasPersonalityFn())
-      if (!isa<GlobalValue>(F.getPersonalityFn()))
-        orderValue(F.getPersonalityFn(), OM);
+    for (const Use &U : F.operands())
+      if (!isa<GlobalValue>(U.get()))
+        orderValue(U.get(), OM);
 
     orderValue(&F, OM);
 
@@ -263,8 +255,8 @@ static UseListOrderStack predictUseListOrder(const Module *M) {
   for (const GlobalAlias &A : M->aliases())
     predictValueUseListOrder(A.getAliasee(), nullptr, OM, Stack);
   for (const Function &F : *M)
-    if (F.hasPrefixData())
-      predictValueUseListOrder(F.getPrefixData(), nullptr, OM, Stack);
+    for (const Use &U : F.operands())
+      predictValueUseListOrder(U.get(), nullptr, OM, Stack);
 
   return Stack;
 }